tests: fix typo in numbered list in documentation
tests: fix typo in numbered list in documentation

Fix a typo in numbered list in the documentation. Also mention
possibility of using TEST= to run a specific test.

Type: fix

Signed-off-by: Elias Rudberg <6e47e6550991154ffa3988d148e1634d2421b18a@bahnhof.net>
Change-Id: I026703af014493afb3dea2d9ad99a7bb510b135d

chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp